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https://issues.apache.org/jira/browse/FLINK-14443?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16954197#comment-16954197
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Jark Wu commented on FLINK-14443:
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Hi [~javadevmtl], currently, the JDBC sink already supports checkpointing,
which means no data will lose even if fails.
But end-to-end is at-least-once guarantee, because we may flush duplicate data
to JDBC if fails.
So is e2e exactly-once is what you want to have?
> Enable checkpointing for JDBC sink/output
> -----------------------------------------
>
> Key: FLINK-14443
> URL: https://issues.apache.org/jira/browse/FLINK-14443
> Project: Flink
> Issue Type: Improvement
> Components: Connectors / JDBC
> Affects Versions: 1.8.0, 1.8.1, 1.8.2, 1.9.0
> Reporter: None none
> Priority: Minor
>
> Currently the JDBC sink/output does not support checkpointing. It would be
> advantageous to enable checkpointing on JDBC sinks for Dbs that have
> transactional support.
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